[PATCH 11/14] of: partition: only create partition node when partitions exist

[Sascha Hauer]

With the legacy partition binding we did not modify the device
node when no partition exist, but with the new binding we would
create the "partitions" node with compatible = "fixed-partitions".
Prevent that by catching the absence of partitions early.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 drivers/of/partition.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/of/partition.c b/drivers/of/partition.c
index 9b96a39edb..2e2ba35e87 100644
--- a/drivers/of/partition.c
+++ b/drivers/of/partition.c
@@ -131,7 +131,7 @@ static int of_partition_fixup(struct device_node *root, void *ctx)
 	struct cdev *cdev = ctx, *partcdev;
 	struct device_node *np, *part, *partnode;
 	int ret;
-	int n_cells;
+	int n_cells, n_parts = 0;
 
 	if (of_partition_binding == MTD_OF_BINDING_DONTTOUCH)
 		return 0;
@@ -139,6 +139,13 @@ static int of_partition_fixup(struct device_node *root, void *ctx)
 	if (!cdev->device_node)
 		return -EINVAL;
 
+	list_for_each_entry(partcdev, &cdev->partitions, partition_entry) {
+		n_parts++;
+	}
+
+	if (!n_parts)
+		return 0;
+
 	if (cdev->size >= 0x100000000)
 		n_cells = 2;
 	else
-- 
2.11.0